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#!/bin/sh
USAGE="Usage: $0 processName"
LOG_FILE="/tmp/memusage.csv"
ELAPSED_TIME=0
PERIOD=1 # seconds
if [ $# -ne 1 ]; then
echo $USAGE
exit 1
fi
echo "ElapsedTime,VmSize,VmRSS" > $LOG_FILE
# Monitor memory usage forever until script is killed
while :
do
SUM_VM_SIZE=0
SUM_RSS_SIZE=0
# In case the monitored process has not yet started
# keep searching until its PID is found
PROCESS_PIDS=""
while :
do
PROCESS_PIDS=`/bin/pidof $1`
if [ "$PROCESS_PIDS.X" != ".X" ]; then
break
fi
done
for PID in ${PROCESS_PIDS} ; do
VM_SIZE=`awk '/VmSize/ {print $2}' < /proc/$PID/status`
if [ "$VM_SIZE.X" = ".X" ]; then
continue
fi
#echo exprVM_ $SUM_VM_SIZE + $VM_SIZE
SUM_VM_SIZE=`expr $SUM_VM_SIZE + $VM_SIZE`
VM_RSS=`awk '/VmRSS/ {print $2}' < /proc/$PID/status`
if [ "$VM_RSS.X" = ".X" ]; then
continue
fi
SUM_RSS_SIZE=`expr $SUM_RSS_SIZE + $VM_RSS`
done
echo "$ELAPSED_TIME sec, $SUM_VM_SIZE KB, $SUM_RSS_SIZE KB"
echo "$ELAPSED_TIME,$SUM_VM_SIZE,$SUM_RSS_SIZE" >> $LOG_FILE
sleep $PERIOD
VM_SIZE=""
VM_RSS=""
# Needs to get actual elapsed time instead of doing this
ELAPSED_TIME=`expr $ELAPSED_TIME + $PERIOD`
done
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